perf/x86/intel/uncore: Add Comet Lake support

The uncore subsystem on Comet Lake is similar to Sky Lake.
The only difference is the new PCI IDs for IMC.

Share the perf code with Sky Lake.
Add new PCI IDs in the table.

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/1589915905-55870-1-git-send-email-kan.liang@linux.intel.com